Investments - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Schedule of Investments [Abstract]
Realized gains (losses) on trading securities	$ 0.5	$ (0.1)	$ 1.2	$ 2.1